Rituximab was reported to reverse refractory acute kidney transplant rejection. Combined with immunoadsorption with or without IVIG, rituximab could successfully prevent antibody-mediated rejection in ABO-incompatible renal transplantation. This study is to assess whether a CNI-free regimen including B-cell depleting antibody induction, everolimus and MMF results in comparable long-term function without a negative impact on safety or efficacy of immunosuppression. This study will be open-label and two-arm randomized (2:1).